(19)
(11) EP 2 564 917 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.01.2014 Bulletin 2014/04

(43) Date of publication A2:
06.03.2013 Bulletin 2013/10

(21) Application number: 12007540.3

(22) Date of filing: 08.02.2008
(51) International Patent Classification (IPC): 
B01D 53/26(2006.01)
B60T 17/00(2006.01)
 B01D 53/22(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

(30) Priority: 17.04.2007 US 736253

(62) Application number of the earlier application in accordance with Art. 76 EPC:
08729430.2 / 2134448

(71) Applicant: New York Air Brake Corporation
Watertown, New York 13601 (US)

(72) Inventors:
  • Wright, Eric
    Evans Mill, New York 13637 (US)
  • Kohar, Richard
    Kingston, Ontario K7M 5A8 (CA)

(74) Representative: Strehl Schübel-Hopf & Partner 
Maximilianstrasse 54
80538 München
80538 München (DE)

   


(54) Air dryer with pre-filter


(57) A filter includes a housing (44) having an air inlet (46, an air outlet (48), a first chamber (112) and a second chamber (114) concentric to and interior the first chamber (112). A coalescer (62) is in the first chamber (112) and a first filter (118) is in the second chamber (114). A first inlet (124) of the first chamber (112) is interior the coalescer (62) and connected to the air inlet (46) and a first outlet (126) of the first chamber (112) being exterior the coalescer (62). A second inlet (128) of the second chamber (114) is interior the first filter (118) and connected to the first outlet (126) of the first chamber (112) and a second outlet (130) of the second chamber (114) is exterior the first filter (118) and connected to the air outlet. The filter includes a membrane separator (40) in the housing (44) connecting the second outlet (130) of the second chamber (114) and the air outlet (48). The filter may be mounted in a reservoir (26) with the membrane separator (40) extending into the reservoir (26).







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Search report